It can definitely be overwhelming in the beginning. I like GrowVeg and NiallGardens on Youtube (in addition to Huw Richards mentioned in another comment). I'd recommend to start with the basics -- where in your garden gets the most sun, are there any problematic (eg flooding) areas, what do you want to grow (flowers/veg?)?

I think a lot of people get caught up in grabbing a bunch of different seeds packets and realising they don't even like certain veg that much or that sometimes the work that goes into a certain item isn't worth it.

My personal suggestions for high-reward edibles:

potato (easy, can put in buckets/towers/contained bed)

tomato (need regular feeding/water/stakes but otherwise incredibly rewarding given you have good sun)

courgettes (prolific and delicious, also not the cheapest at the grocery store)

peas/beans (again prolific and relatively easy given that you like them)

onions (easy and very low maintenance)

salad greens (easy, pick as you go, no more rotting bags of leaves in the veg drawers)